Electrical connecter device



June I ,"1926.

\ R. B. BENJAMIN ELECTRICAL CONNECTER DEVICE 2 Sheets-Shem; 1

- Filed Sept; 19. 1921 June 1 1926.

ELECTRICAL CONNECTER DEVICE Filed Sept. 19. 1921 2 Sheets-Sheet 2 Patented June 1, 1926.

UNITED STATES PATENT OFFMIEZ.

REUBEN B. BENJAMIN, OF CHICAGO, ILLINOIS, ASSIGNOR 'IO BENJAMIN ELECTRIC MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ELECTRICAL CONNECTER DEVICE.

Application filed September 19, 1921. Serial No. 501,699.

My invention relates to electrical connecter devices, and more speclfically to twoway plugs.

One of the objects of my inventionis tois to provide a plug receptacle the shell contacts of which are compactly arranged and securely anchored, the anchorage means being such that the contacts may be independently inserted or removed while the housing and center contact portions remain permanently assembled.

Further objects will appear from the detailed description to follow and from the appended claim.

In the drawings in which an embodiment of my invention is shown Figure 1 is a top plan View of a plug cluster;

Fig. 2 is a section on the line 2-2 of Fig. 1;

Fig. 3 is a section on the line 33 of Fig.

Fig. 4; is a perspective view showing a detail of an anchorage member;

Fig. 5 is a section corresponding to line 3-3 but showing a different form of anchorage means; and

Fig. 6 is a side elevation showing the anchorage means of Fig. 5.

Referring to Figs. 1 to 4 inclusive, the two-way plug shown therein comprises threaded shell and center plug contacts 10 and 11, respectively, threaded shell and center receptacle contacts 12 and 13, respectively, and suitable means for electrically connecting, mechanically supporting, and insulating the various contacts. An insulating positioning member 1 1 is provided for positioning the plug contacts 10 and 11 with respect to each other. An insulating positioning and supporting member 15 is provided for positioning the receptacle contacts with respect to the plug contacts.

Each receptacle threaded shellcontact 12 is provided with an anchorage member 16, in the form of a sheet metal stamping, having an arcuate portion 17 to which the inwardly extending flange 18 of the contact 1.2 is secured, and having a central tongue portion 19, into which is threaded an anchorage screw 20 which extends through the insulating base 15. The screw 20 not only serves to hold the anchorage member 16 in place, but also electrically connects the plug shell contact 10 with the receptacle threaded shell contact 12, as this screw extends through the inwardy extending flange 21 or the plug shell contact. Each receptacle shell contact 12 is secured to the anchorage memberlG by means of screws 22 extending through the flange 18 and threaded into the openings 23 in the arcuate portion 17 of the anchorage member. An insulating member or washer 2 1 is provided between the heads of the screws 22 and the flange 18 of the threaded shell contact, which bears evenly on the flange 18 and clamps it firmly against the anchorage member 16.

A substantially elliptical cup-shaped housing member 25 is provided for housing the receptacle contacts, the upper edge of this sheet metal housing 25 being flanged over the lower edge of the insulating member 15, and permanently secured thereto, as indicated at 26. Suitable insulating sleeves 27, which may be of fibre, surround and in sulate the shell receptacle contacts 12. Suitable finishing sleeves 28 are provided to surround the insulating sleeves 27, these finishing sleeves 28 being secured to the housing member 25.

In assembly, the threaded shell receptacle contact 12 can be inserted and secured in place after the housing member 25 has been permanently secured to the insulating base 15, as the shell contacts are insertable and removable through the entrance openings in the insulating sleeve 27, and the securing screws 22 are accessible for operation through these entrance openings.

The center contacts 13 for the receptacles are formed of a single integral sheet metal stamping, the central portion of which is engaged by a nut 29, into which is threaded the aXially extending screw 80. This central screw not only serves to hold the parts of the two-way plug together, but also serves to electrically connect the plug center contact 11 with the receptacle center contacts 13.

In assembly, the insulating base 15, the housing 25, the fibre sleeve 27, and the finishing sleeves 28 are first assembled as a uni tary construction, the plug shell contact 10 is then put in place, also the anchorage memher 16, and. the screws 20 are inserted and. screwed into the anchorage member 16. The receptacle contacts are then inserted into place and secured in an obvious manner by means of the screws 22 and 30.

The construction shown in Figs. 5 and G is substantially the same that just described, except that here the anchorage means for both of the threaded shell receptacle contacts is formed of a single integral sheet metal stamping; 31, comprising two similar portions 32 and 33, each of the portions 32 and 3?) being suhstanti ally the same in construction as the anchorage member 16 previously described, the only difference heing that the two parts are termed as part of an integral sheet metal stamping bent as shown at The screws 20 are threaded into the central tongues 35 and the screws 22 are threaded into the tapped openings 36, to secure the threaded shell receptacle contacts in place.

Otherwise the construction is the same as in the form previously described, also the mode of assembly.

hat I claim as new, and desire to secu e by Letters Patent of the U. S. is

A two way plug comprising a plug shell contact having an inwardly extending: flange, a pair of receptacle shell contacts, each. of said. receptacle shell contacts having an inwardly extending flange, said flanges lying, in three intersecting planes, and means for electrically and mechanically connecting 1 said receptacle shell flanges with said plug shell flanges, comprising a stamping having two united U-shaped portions lying pa allel to and secured to said receptacle shell flanges, respectively, and two tongues struck up from between the arms oi said U-shaped portions, respectively, and two screws extending through said plug shell flange and threaded into said tongues respectively.

In witness whereof, I have hereunto subscribed my name.

REUBEN B. BENJAMIN. 

